👉 Unexcrescent is a term used in dentistry to describe a tooth that has been completely covered by dental plaque, which is a layer of bacteria and debris that can be found on teeth. This condition occurs when plaque builds up over time without being removed through brushing or flossing, leading to the formation of small pockets of dead cells and gum disease. Unexcrescent teeth are typically visible in areas where food particles or bacteria can accumulate, such as between the tooth's outer surface and